Oil-well drill.



Patented J une 13, 1905.

PATENT OFFICE.

JOSEPH E. DOVNER, OF ALLENPORT, PENNSYLVANIA.

OIL-WELL DRILL.

SPECIFICATION forming part of Letters Patent No. 792,322, dated June 13,1905.

Application filed January 11,1905. Serial No. 240,597.

T0 @ZZ whom, it Duty concern:

Be it known that I, JOSEPH E. DowNnR, a citizen of the United States ofAmerica, residing' at Allenport, in the county of Washington and Stateof Pennsylvania, have invented certain new and useful Improvements inOil-W'ell Drills, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to certain new and useful improvements inoil-well drills, and more particularly to a novel form of lock which isadapted to lock the diierent sections of a drill together to preventthem from becoming disjoined.

The invention has for its object the provision of a novel form of lockwhich can be conveniently used in connection with oil-well drills. Theordinary type of oil-well drills is composed of a pluralityT of partsconnected together by screw-threads, and during the operation of usingthese drills they frequently become disjoined and in the majority ofinstances cannot be removed from the well. The lock which I haveconstructed is adapted to prevent the different sections of an oil-welldrill from becoming disjoined, andI have provided novel means formanipulating the lock in connection with oil-drills.

Briefly described, my improved lock consists in providing one drill'member with a recess in which is mounted a corrugated wheel having asquare depending lug and of providing' the other section of drill with aslot in its end in which the depending lug of the corrugated wheel isadapted to engage after the one memberhas been secured within the other.I employ a spring for retaining the square lug within the section ofdrill and employ a wedge for holding the lock in an elevated position,whereby'the section of drill cannot be disjoined.

The above construction will be hereinafter more fully described and thenspecifically pointed out in the claims, and, referring to the drawingsaccompanying thisV application, like numerals of reference designatecorresponding parts throughout the several views, in which- Figure l isa vertical sectional View of a portion of two drill-sections securedtogether. Fig. 2 is a transverse sectional View taken on the line .fr aiof Fig. l. Fig. 3 is a similar view taken on the line y g/ of Fig. '1.Fig. 4. is a detail View, partly in section, of a gage which is employedin connection with my improved locl; and Fig. 5 is a top plan view ofone of the sections of the drill.

In the accompanying drawings I have illustrated two sections of a drillwhich are secured together by the ordinary form of screwthreads.

The reference-numeral 1 designates one of the sections of the drill,which will be hereinafter termed the female member, and thereference-numeral 2 designates another section of the drill, which willbe hereinafter termed the male member. It is the common practice now toemploy the screw-threads 8 to secure these two members together, andconsiderable trouble has been experienced in the members becomingdisjoined while they were being used within the well, and for thisreason I have provided a lock for securing the member 2 to the member 1.In providing this lock the drills in present use can be constructed inaccordance with my invention, and I provide the male member .2 with aslot 4, which is preferably formed in the upper end of the member and issubstantially rectangular in cross-section. (See Fig. 5.) The femalemember l is provided with a toothed or corrugated recess 5, this recessbeing formed in the end of the screw-threaded socket of the member l.Formed in the bottom of the toothed or corrugated recess 5 is a recess6, which extends within the body portion of the female member l,preferably central of said member.

The reference-numeral 7 designates a slot which is formed transverselyof the female member 1 and is adapted to communicate with the centralrecess 6.

The reference-numeral 8 designates a rod which is mounted in the recess6, this rod having swiveled upon its lower end, as indicated at 9, thecorrugated or toothed locking member l0, which is provided with adepending stud 11 upon its lower face. The upper end of the rod 8 isconnected, as indicated at 12',

` to a spring 14, which is mounted in the upper end of the recess 6, andthis spring normally has a tendency to force the rod 8 downwardly. InFig. 1 of the drawings the spring is illustrated as being depressed andis retained in this position bya wedge-shaped key 15, which passesthrough the slot 7 and a slot 16 formed in the rod 8.

The lockingmember 10 is substantially the same size as the recess 5, andthe depending stud 11 is substantially the same shape inV crosssectionas the slot 4.

To lock the member 2 within the female member 1, the wedge 15 isremoved, at which time the spring 14 will force the rod 8, lockingmember 10, and stud 11 downwardly, ther stud engaging in the recess 4.The member 2 is prevented from rotating in the member 1 by the toothedor corrugated recess 5 and: locking member 10 and also by thesubstantially rectangular shaped stud 11 fitting within the slot 4. Byreferring toFig. 3l of the drawings it will be observed that the teethor corrugations of the locking member 10 snugly lit within the groovesformed by the teethl or corrugations of the recess 5.

Should it be desired to remove the drill member 2,. the wedge-shaped key15 is inserted in the slot 7 and the tapered end of the key engaged inthe edge of the slot 16, and upon the wedge-shaped key being driveninwardly the rod 8, the locking member 10, and the stud 11 are raisedwithin the recess 5 and the member 2 of the drill can be rotated andremoved from the female member 1.

In Fig. 4 of the drawings Ihave illustrated a gage, which consists of aSpanner-head 17 and a bar 18 substantially parallel to the spanner-head17. The gage is employed for a number of 1)u1poses-namely, when thedrilll is not being used the gage is inserted in the y end of the drillto engage the stud 11 and raise the same so as to further aid in placingthe wedge-shaped key within the slot 16, it also being used to engagethelocking member 10 and reseat the same in the recess 5. This isaccomplished by removing the wedge-shaped key 15, permitting' thelocking member 10 to extend outside of the recess 5, at which time itcan be rotated, this being permitted by the swivel 9, at which time itcan be reseated within the recess 5.

While I have herein described my improved locking device as beingapplicable to oil-well drills, it is obvious that the same may be usedin connection with other drills and for joining two screw-threadedmembers together.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit and scope of theinvention.

l/Vhat I claim, and desire to secure by Letters Patent, is-

1. The combination with a male and a female section of a drill, of alock for holding the sections against independent rotation whenconnected together, and embodying a locking member fitting in a recessin the female member and having peripheral lugs engaging in grooves insaid female member, a lug carried by saidlocking member to engage in aslot provided therefor in the upper end of the male member, a rod orstem connected to the upper face of the locking member and extendinginto the female member and having a transverse slot, and means forengagement in said transverse slot for elevating the lug of the lockingmember out of engagement with the slot in the male member.

2. The combination with two drill-sections, adapted to be screwedtogether, of a locking member mounted in one of said sections, a rodrotatably connected to said locking member and extending within saidsection, the other of said sections having a slot formed therein, a studcarried by said locking member, means for normally holding said stud inengagement with said slot, and means to hold said stud in an elevatedposition out of engagement with said slot, substantially as described.

3. The combination with two sections of a drill, one of said sectionshaving recesses formed therein, said section having a slot formedtherein communicating with one of said recesses, a locking membermounted in one of said recesses, a swiveled rod connected to saidlocking member and extending within the other of said recesses, theother section of drill having aslot formed therein, means to normallyhold said locking member in engagement withsaid slot, and means toelevate said locking member out of engagement with said slot,substantially as described.

4. A lock of the type described comprising a movable locking member, arod rotatably connected to said member, a stud carried by said lockingmember, means to support said locking member, and means to elevate saidlocking member, substantially as described.

5. In sectional drills, a lock for securing the sections againstindependent rotation, and embodying a drill-section having grooves, adrill-section having a slot and a locking member having peripheral lugsengaging the grooves in one of the drill-sections and having a lug toengage the slot in the other of the drill-sections, and a rod connectedto the upper face of said locking member.

In testimony whereofl I aiix my signature in the presence of twowitnesses.

JOSEPH E. DOVNER.

/Vitnesses:

PETER SPEICHER, WILLIAM H. ATKINs.

IOO

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